Interchangeable Eyeglass Lens Connector with Modular Fastening
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Solution Overview
Problem
Conventional eyeglasses lack the ability to interchange lenses, limiting their adaptability to different purposes and prescriptions, making it uneconomical to produce multiple pairs for varying needs.
Innovation Solution
A plastic eyeglass lens connector with detachable insertion pieces and fastening pins that securely attach to the lens surface, allowing for interchangeable lenses and a substrate for easy cut-processing to form custom lens shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenses are secured to mounting pieces by riveting or lapped flat seam, then the mounting structure is simple and reliable, but lens exchange is not possible and lens shape is determined first and cannot be changed
Solution Approach 1:
The mounting structure is divided into separate components: a mounting piece with through-holes and a connector with protrusions that fit into these holes. This segmentation allows the lens, mounting piece, and connector to be assembled in a modular fashion, enabling lens exchange while maintaining structural integrity. The connector acts as an interchangeable component that can be detached and replaced with different lenses.
Solution Approach 2:
The connector protrusions are inserted into the mounting piece through-holes, creating a nested assembly where the connector is partially embedded in the mounting piece. This nested structure provides a secure connection that allows for controlled disassembly and reassembly, facilitating lens exchange while maintaining a compact and stable mounting configuration.
2Adaptability or versatility
If lens shape is determined first and cut, then manufacturing precision is achieved, but customers cannot obtain different lens shapes or prescriptions on spot
Solution Approach 1:
The mounting piece and connector are pre-manufactured with standardized through-holes and protrusions, respectively. This preliminary preparation of standardized components allows for rapid assembly of different lens configurations without requiring time-consuming custom manufacturing for each lens shape or prescription, enabling on-spot customization.
Solution Approach 2:
The standardized mounting piece with through-holes serves as a universal base that can accommodate multiple types of lenses with different shapes and prescriptions. The universal interface design allows a single mounting piece to support various lens options, enabling customers to obtain different lens configurations on spot without requiring multiple specialized mounting structures.
3Adaptability or versatility
If multiple pairs of eyeglasses are produced for varying needs, then adaptability to different purposes is improved, but production cost increases
Solution Approach 1:
The eyeglass system transitions from a static configuration where lenses are permanently fixed to a dynamic system where lenses can be exchanged. The reversible connection between the connector protrusions and mounting piece through-holes enables users to switch between different lenses for different purposes, replacing the need for multiple fixed eyeglass pairs with a single adaptable framework.
Solution Approach 2:
Instead of discarding entire eyeglass pairs when lens changes are needed, the design allows for selective replacement of only the lens component. The mounting piece and frame structure are recovered and reused, while only the specific lens that needs changing is replaced, reducing material waste and production costs compared to manufacturing multiple complete eyeglass pairs.
Data Source
AI summary
Eyeglass lens connector with single-operation interchangeable lenses. The configuration enables cutting lenses with the connector body alone mounted to the lens substrate, allowing eyeglasses to be assembled by utilizing the connector after the lens is cut on demand from a customer. The eyeglasses have a lens connector (1) connecting a lens (5) to an insertion piece of a lens connecting member (2), and an insertion hole (10) for the insertion piece (3). A guide groove for guiding a tip of the engagement piece (3) is provided along the opening end (13) of the insertion hole (10). The lens connector (1) is secured to the lens (5) by fastening two protruding fastening pins (32) into fastening holes (29) provided in the lens (5). The lens (5) is connectable to the lens connecting member (2) by squeezing the insertion piece (3) into the insertion hole (10).